Filament-lamp.



M. SIDON.

FILAMENT LAMP.

APPLIoATIoN FILED un. 27, 1911.

Patented 11011.25, 1913.

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MAXIMILIAN sInoN, or NEW roux, N. Y. l

FILAMENT-LAMP.

Specification of Letters Patent.

Patented Nov. 25, 1913.

Application l'ed April 27, 1911. Serial No. 623,599.

lamp of this type 1n which t e bulb is made' of a plurality of parts adapted to fit closely together whereby the proper vacuum Within the bulb may be secured.

The principal object of my invention is to provide a filament lamp havin t-he bulb thereof of a plurality of parts, a apted to be separated, whereby the filament contained therein may be made accessible.

A further object of my invention is to provide an improved method of mounting the filament and its support within the bulb whereby the support and filament may be easily withdrawn when the filament is burned out and a new filament is to be placed in position.

A further object of my invention is to' provide as an article of manufacture a filament device for incandescent lamps having a suitable adapted for from the bulb. Reference is to be had to the accompany; ing cation, in which like characters of reference denote corresponding parts in all the views, and in whic y Figure 1 is a vertical sectional view of a lamp embodying my invention; Fig. 2 is a detail View, partly in section, of the oontacting means adjacent the end of the filament supporting frame; Fig. 3 illustrates a modified form of 'oint between the parts of the'bulb; Fig. 4 illustratesl a further modification thereof; Fig. 5 is a side view of my filament supporting frame with the filament thereon, the same being inclosed in a suitable Ycarton for shipping purposes.

The bulb of the lamp comprises the inner end portion 1 and the outer end portion 2 having the usual tip 3 thereon, these portions being in en agement with each other at 4,ad`acent sur aces of the portions 1 and 2 being ground in order to provides. tight joint. The interior ofthe supporting frame, the same being qulck insertion and removal drawings forming a part of .this specifiv adapted to be engaged by the t electrical connection with the filament to be removed'.

rtion 1 is pro-- desired to renew the fi vided wlth a suitable extenslon 5 having the be opened by removing the tip 3 which a f usual recessedqpart 6 within which the leading-in wires 7, 8, extend, these wires being embedded in the inner end 9 of this extension.` The extension is further provided with a longitudinall extending supportin rod 10 of any suita le conducting materia the outer end 11 thereofbeing provided with screw threads on which a thumb nut 12 is adapted to t. The portion 1 carries on its outside the usual base 13 having also the contacting end portion 14, the leading-in wires connecting with the base portion which is adapted for` insertion into the standard socket. One of the leading-in wires, as 8, is in metallic contact with the supporting rod 10, this rod being provided with a flange 15, the other leading-in wire 7 being connected to a shell 16 carrled on the supporting rod, there being suitable insulating material 17 between. the rod and the shell. Y The supporting frame for the filament 18, which may be of any desirable material, comprises the longitudinali extending body portion 19 which is adapted7 to be ositioned on the supportin rod-10, the en portions of this body mem er having transversely extending arms 20, 21, designed to support the convolutionsof the filament which may be of any desired number, there are also provided other arms 22, 23, which are adapted to make electrical contact with the conductors, the upper arm 22 having a ring 24 umb nut 12 whereby one end of the filament is placed in leading in wire 8, the other end of the filament being in electricalconnection with the other leadingin Wire 7, by means of the end portion 25 of the arm 23, this end p ortion beingin contact with a fem'ule-26, carried by the end portion of the body member 19 andadapted to be received within and in contact with the shell 16. v

From what has been said it will be seen that the filament, which is suitably removably supported within the bulb, is in electrical circuitywith the leading-in wires, the construction'and arrangement, however, being such that merely removing the thumb nut 12 will enable the sup orting frame and e ro r vacuum is maintained within the bul t lis vacuum being I insured by the ti ht joint 4; when it is ament, the bulb maly lows the air to enter, thereby equalizing the pressure on each side of the bulb and permitting easy separation of the parts thereof. The filament and its support. may then be taken ofi' the supporting rod 10 and another one put in position thereon, after which the parts 1 and 2 of the bulb may be brought together again and the tip 3 sealed.

In Fig. 3 I have shown the parts 1, 2, which go to make up the bulb, provided with a modified form of joint; in this instance the length of contact between the adjacent portions of these parts is more extended --than i`n the form 'shown in Fig. 1, the part 2" entering within the flanged portion 26 of the part 1.

Fig. 4 shows a further modification in that the parts 1a and 2a are provided with matching end portions 4a, 4b, with a suitable packing ring 27 between, the parts 4a and 4b being designed to be held closely together by means of the flanged portion 28 carried on the part 2a which engages with a nut 29 carried on the part l, a suitable metallic support-ino1 member 30 being -pro vided to support this nut, a packing material 31 being placed between the metallic uplporting member and the part 1"L of the The sup-porting frame with the filament thereon is designed to be disposed of as an article of manufacture to be placed in suitable bulbs and to this end I have shown it in Fig. 5 inclosed in a suitable carton 32, the arms 20, 21, 22, and 23, being suitably'extended in order to prevent contactof the filament against the sides of the carton, thereby preventing breaking of the filament.

While I have shown the method whereby the different parts of the bulb engage each other, it is, of course, obvious that many other methods may be employed, the idea being to provide a bulb made up of a plurality of parts whereby they may be suitably separated in order to provide a new filament when the one inclosed therein has been burned out. It'is also to be noted that the particular formv of the supporting member for the filament may be varied in order to meet the require-ments of different makes of filaments or different sizes of bulbs without departing from thespirit of theinven- Y 'lamp filament being carried on the frame,

one end of the filament being in electrical contact with the said shell.

2. An incandescent lamp provided with a supporting rod, one of the leading-in wires being in electrical connection with the said supporting rod, a shell carried on the said rod and insulated therefrom, the other "leading-in wire lbeing in electrical connection with the said shell, and a frame having a filament thereon mounted on the said support-ingrod, the frame being provided with members adapted for electrical contact with the said supporting rod and the said shell, whereby the leadingin wires are placed in circuit with the said filament.

3. As a new article of manufacture, a supporting frame having an opening extending therethrough and a. plurality of arms thereon, a filament carried by the said arms, one of the said arms being adapted for engagement with one end of a suitable supporting rod carried' Within an incandescent bulb, another of the said arms being adapted for connection with an insulated shell carried by the said supporting rod, the said rod and the said shell being in electrical contact with the leading-in wires of the lamp.

4. As a new article of manufacture, a supporting frame having an opening eX- tending longitudinally therethrough, the said frame being provided with a plurality of arms, filament on the arms, one of the said arms being provided with a ring, another of the said arms terminating in a -fe-rrule positioned on the said frame, the said ring and the said ferrule being adapted for contact with portions connected to the leading-in wires of an incandescent lamp when the said frame and filament arey positioned on a suitable supporting rod contained within a lamp.

5. An incandescent lamp provided with a supporting rod adapted to eonductcurrent, one of the leading-in wires of the lamp being connected to the said rod, a shell carried by the rod and insulated therefrom, the other leading-in wire being connected to the shell, a frame having a filament thereon, the frame being mounted on the said rod, one end of' the filament beingr in electrical contact with the said shell, the other end of the filament being in contact with the said rod, and means for engagement with the said ro-d, whereby the frame will be held thereon.

6. As a new article of manufacture, a supporting frame for a filamentI for use in incandescent lamps, the frame being of nonconducting material and being provided with a passageway extending longitudinally thereof, the said frame comprising a plurality of arms, the filament being carried by the said arms, one end of the frame being provided with a ferrule, one end bf th filament being in electrical contact with the said ferrule, the other end of the frame being provided with a conducting element in, electrical contact with the other end of the filament. i

7 An incandescent lamp provided with a supporting rod, one of the leading-in wires of the lamp being, in electrical connection with said rod, an electrical connecting elemet adjacent said rod insulated therefrom, a frame removably carried by said rod, a lamp filament carried on said frame, one end of the filament bein in electrical connection with one of sai leading-in wires, said element being in relectrical connection with the other leading-in wire, and the f other end of the filament being in electrical connection with said rod.l

i 8. An incandescent lamp rovided with a sup ortin rod, one of the eading-in wires of t e sai lamp bein in electrical connec.

tion with the said ro an element adjacent the rod and insulated therefrom, a frame removably carried by the said rod, the 1am filament beirg carried on the frame, one en of `the filament-'being in electrical contactwith the said element.

In testimony whereof I have signed my name to this specification in the presence 

